High efficiency with a crisp, sparkling light Philips MC PAR38 lamps deliver improved lumen maintenance over standard metal halide PAR lamps.;Philips MC PAR38 lamps reduce lighting cost of ownership - they are an energy efficient alternative to incandescent or halogen PAR lamps. Philips MasterColor Ceramic Metal Halide PAR38 Lamps offer high-efficiency, ceramic metal halide reflector lamps with a stable color over lifetime and a crisp, sparkling light. Superior color stability within 200K.;Lamp to lamp color consistency over life higher lumen maintenance.;Improved lumen maintenance over standard metal halide.;Feature ALTO lamp technology with reduced mercury.;Operate on existing ballasts.;Lamps feature integrated UV blocking medium for reduced fading of fabrics and paintings.;70 and 100 watt flood and spot, 3000, and 4000K versions Ideal for retail accent and display lighting and architectural lighting for interior and exterior applications.